<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数组排序(冒泡排序)</title>
</head>
<body>
    <script>
        // 将数组[10,9,8,7,6,5,4,3,2,1]中的元素按从小到大的顺序排列
        var arr = [10,20,30,2,5,7,8,3,2,1];
        for (var i = 0; i <= arr.length-1; i++) {
            for (var j = 0; j < arr.length - i - 1; j++) {
                if (arr[j] > arr[j+1]) {
                    var temp= arr[j];
                    arr[j] = arr [j+1];
                    arr[j+1] = temp;
                }
            } 
        }
        console.log(arr);
    </script>
</body>
</html>